Who Is On My WiFi
By IO3O LLC
Open the Mac App Store to buy and download apps.
Who's On My Wifi is an easy way to Detect Unknown Devices on your network.
Whether it's someone using your wired or wireless network, Who's On My Wifi's optional automated background scanning will find all devices on the network, let you tag them, and notify you if any new unknown devices are found.
What's New in Version 1.1.0
Added connectivity to Who's On My Wifi Online Subscription Service for OS X Mavericks and Yosemite.
Bug Fix - Fixed startup crash on some machines.
Bug Fix - Fixed issue where only My Machine was showing on the network and nothing else.
works if you like waiting for the spinning wheel
At first I gave this app one star, the program just kept locking up and giving me the spinning wheel. After waiting for over five minutes the wheel goes away and it starts working.
A great app
This app was "insanely" great. It is very good to detect the people who are connected to your wifi. It is also good to know their IP address 'n' MAC address. This app really helped me.
Keeps hanging, need to Force Quit
This app was great, but with the 1.1 release it has been hanging on me constantly. I need to Force Quit it often. And unfortunately there’s still no way to export a report of your WiFi devices and MAC addresses.